Landlords.
Two notches below a lawyer.
In my early days I contracted a simple exterior security light insatll for a landlord prop.
I verified location and all specs prior.
This shister calls me and says diffrent after Im done.
I go ballistic and he apoligises and agree to pay. Later he calls me and says no he will not pay.
I spent $12 for a court date ,small claims.
The idiot brings pictures of my work to the judge for inspection. He changes his story about a lag bolt not being "right".
Judge sees thru his BS and orders him to a bank or ATM and bring back CASH to pay me.
30 minutews later he retutrns as ordered and I go home with money for work served.
I would call that a service call horror but a battle won.